P0457 — Evaporative Emission System Leak Detected (Fuel Cap Loose/Off)

OA fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.

Possible causes

• The fuel cap is not closed or doesn’t seal
• The cap seal is cracked or hardened
• Dirt or rust on the filler neck rim

What you can do yourself

1. Tighten the fuel cap until it clicks. The code will clear itself after a few drives.
2. Usually doesn’t affect how the car drives.

Find the part on Kaspi ShopBefore buying, check the part number or match the part by VIN in the Kaspi “Garage”.

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The explanation comes from the error code reference in the AvtoElektrik PRO app.